A system for designing a double$-$bed activated carbon adsorption system is planned for treating $300$ m$3/$min of air containing $600$ ppmv of uranium. Laboratory studies have shown that the utilized activated carbon can adsorb $9$ kg of uranium per $100$ kg of carbon under operating conditions. If the system operates at $30\backslash$deg C and $1\mathrm{.}0$ atm with a removal efficiency of $99\%,$ approximately calculate the dimensions of each carbon bed. Both the regeneration and the operation of the bed last for one hour.